The font-family of the source tab shows font-family: Courier New, Courier, System, fixed-width; but monospace should be included in that last. I think it should go after Courier, so that if the preferred courier fonts aren't available it uses the system monospace font.

some of the mails we send into mailhog contain PDF files (e.g. "terms of service" or similar).
these mails are ~600kb in size which leads to a "explosion" of data which needs to be transmitted to the browser on the initial requeest via
https://myhost/api/v2/messages?limit=50

the reasons is, that this message ajax request already contains all attachments in a base64 (or similar?) encoded form.

would it be possible to load attachments after opening a mail instead of sending all the data when rendering the list-of-emails ?